Kconfig 26 KB

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  1. source "arch/powerpc/platforms/Kconfig.cputype"
  2. config PPC32
  3. bool
  4. default y if !PPC64
  5. config 32BIT
  6. bool
  7. default y if PPC32
  8. config 64BIT
  9. bool
  10. default y if PPC64
  11. config WORD_SIZE
  12. int
  13. default 64 if PPC64
  14. default 32 if !PPC64
  15. config ARCH_PHYS_ADDR_T_64BIT
  16. def_bool PPC64 || PHYS_64BIT
  17. config ARCH_DMA_ADDR_T_64BIT
  18. def_bool ARCH_PHYS_ADDR_T_64BIT
  19. config MMU
  20. bool
  21. default y
  22. config GENERIC_CMOS_UPDATE
  23. def_bool y
  24. config GENERIC_TIME_VSYSCALL
  25. def_bool y
  26. config GENERIC_CLOCKEVENTS
  27. def_bool y
  28. config HAVE_SETUP_PER_CPU_AREA
  29. def_bool PPC64
  30. config NEED_PER_CPU_EMBED_FIRST_CHUNK
  31. def_bool PPC64
  32. config NR_IRQS
  33. int "Number of virtual interrupt numbers"
  34. range 32 32768
  35. default "512"
  36. help
  37. This defines the number of virtual interrupt numbers the kernel
  38. can manage. Virtual interrupt numbers are what you see in
  39. /proc/interrupts. If you configure your system to have too few,
  40. drivers will fail to load or worse - handle with care.
  41. config STACKTRACE_SUPPORT
  42. bool
  43. default y
  44. config HAVE_LATENCYTOP_SUPPORT
  45. def_bool y
  46. config TRACE_IRQFLAGS_SUPPORT
  47. bool
  48. default y
  49. config LOCKDEP_SUPPORT
  50. bool
  51. default y
  52. config RWSEM_GENERIC_SPINLOCK
  53. bool
  54. config RWSEM_XCHGADD_ALGORITHM
  55. bool
  56. default y
  57. config GENERIC_LOCKBREAK
  58. bool
  59. default y
  60. depends on SMP && PREEMPT
  61. config ARCH_HAS_ILOG2_U32
  62. bool
  63. default y
  64. config ARCH_HAS_ILOG2_U64
  65. bool
  66. default y if 64BIT
  67. config ARCH_HAS_CPU_IDLE_WAIT
  68. bool
  69. default y
  70. config GENERIC_HWEIGHT
  71. bool
  72. default y
  73. config GENERIC_GPIO
  74. bool
  75. help
  76. Generic GPIO API support
  77. config ARCH_NO_VIRT_TO_BUS
  78. def_bool PPC64
  79. config PPC
  80. bool
  81. default y
  82. select OF
  83. select OF_EARLY_FLATTREE
  84. select HAVE_FTRACE_MCOUNT_RECORD
  85. select HAVE_DYNAMIC_FTRACE
  86. select HAVE_FUNCTION_TRACER
  87. select HAVE_FUNCTION_GRAPH_TRACER
  88. select ARCH_WANT_OPTIONAL_GPIOLIB
  89. select HAVE_IDE
  90. select HAVE_IOREMAP_PROT
  91. select HAVE_EFFICIENT_UNALIGNED_ACCESS
  92. select HAVE_KPROBES
  93. select HAVE_ARCH_KGDB
  94. select HAVE_KRETPROBES
  95. select HAVE_ARCH_TRACEHOOK
  96. select HAVE_MEMBLOCK
  97. select HAVE_MEMBLOCK_NODE_MAP
  98. select HAVE_DMA_ATTRS
  99. select HAVE_DMA_API_DEBUG
  100. select USE_GENERIC_SMP_HELPERS if SMP
  101. select HAVE_OPROFILE
  102. select HAVE_SYSCALL_WRAPPERS if PPC64
  103. select GENERIC_ATOMIC64 if PPC32
  104. select HAVE_IRQ_WORK
  105. select HAVE_PERF_EVENTS
  106. select HAVE_REGS_AND_STACK_ACCESS_API
  107. select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
  108. select HAVE_GENERIC_HARDIRQS
  109. select HAVE_SPARSE_IRQ
  110. select IRQ_PER_CPU
  111. select GENERIC_IRQ_SHOW
  112. select GENERIC_IRQ_SHOW_LEVEL
  113. select IRQ_FORCED_THREADING
  114. select HAVE_RCU_TABLE_FREE if SMP
  115. select HAVE_SYSCALL_TRACEPOINTS
  116. select HAVE_BPF_JIT if (PPC64 && NET)
  117. select HAVE_ARCH_JUMP_LABEL
  118. select ARCH_HAVE_NMI_SAFE_CMPXCHG
  119. config EARLY_PRINTK
  120. bool
  121. default y
  122. config COMPAT
  123. bool
  124. default y if PPC64
  125. select COMPAT_BINFMT_ELF
  126. config SYSVIPC_COMPAT
  127. bool
  128. depends on COMPAT && SYSVIPC
  129. default y
  130. # All PPC32s use generic nvram driver through ppc_md
  131. config GENERIC_NVRAM
  132. bool
  133. default y if PPC32
  134. config SCHED_OMIT_FRAME_POINTER
  135. bool
  136. default y
  137. config ARCH_MAY_HAVE_PC_FDC
  138. bool
  139. default !PPC_PSERIES || PCI
  140. config PPC_OF
  141. def_bool y
  142. config PPC_UDBG_16550
  143. bool
  144. default n
  145. config GENERIC_TBSYNC
  146. bool
  147. default y if PPC32 && SMP
  148. default n
  149. config AUDIT_ARCH
  150. bool
  151. default y
  152. config GENERIC_BUG
  153. bool
  154. default y
  155. depends on BUG
  156. config SYS_SUPPORTS_APM_EMULATION
  157. default y if PMAC_APM_EMU
  158. bool
  159. config EPAPR_BOOT
  160. bool
  161. help
  162. Used to allow a board to specify it wants an ePAPR compliant wrapper.
  163. default n
  164. config DEFAULT_UIMAGE
  165. bool
  166. help
  167. Used to allow a board to specify it wants a uImage built by default
  168. default n
  169. config REDBOOT
  170. bool
  171. config ARCH_HIBERNATION_POSSIBLE
  172. bool
  173. default y
  174. config ARCH_SUSPEND_POSSIBLE
  175. def_bool y
  176. depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
  177. (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
  178. config PPC_DCR_NATIVE
  179. bool
  180. default n
  181. config PPC_DCR_MMIO
  182. bool
  183. default n
  184. config PPC_DCR
  185. bool
  186. depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
  187. default y
  188. config PPC_OF_PLATFORM_PCI
  189. bool
  190. depends on PCI
  191. depends on PPC64 # not supported on 32 bits yet
  192. default n
  193. config ARCH_SUPPORTS_DEBUG_PAGEALLOC
  194. def_bool y
  195. config PPC_ADV_DEBUG_REGS
  196. bool
  197. depends on 40x || BOOKE
  198. default y
  199. config PPC_ADV_DEBUG_IACS
  200. int
  201. depends on PPC_ADV_DEBUG_REGS
  202. default 4 if 44x
  203. default 2
  204. config PPC_ADV_DEBUG_DACS
  205. int
  206. depends on PPC_ADV_DEBUG_REGS
  207. default 2
  208. config PPC_ADV_DEBUG_DVCS
  209. int
  210. depends on PPC_ADV_DEBUG_REGS
  211. default 2 if 44x
  212. default 0
  213. config PPC_ADV_DEBUG_DAC_RANGE
  214. bool
  215. depends on PPC_ADV_DEBUG_REGS && 44x
  216. default y
  217. source "init/Kconfig"
  218. source "kernel/Kconfig.freezer"
  219. source "arch/powerpc/sysdev/Kconfig"
  220. source "arch/powerpc/platforms/Kconfig"
  221. menu "Kernel options"
  222. config HIGHMEM
  223. bool "High memory support"
  224. depends on PPC32
  225. source kernel/time/Kconfig
  226. source kernel/Kconfig.hz
  227. source kernel/Kconfig.preempt
  228. source "fs/Kconfig.binfmt"
  229. config HUGETLB_PAGE_SIZE_VARIABLE
  230. bool
  231. depends on HUGETLB_PAGE
  232. default y
  233. config MATH_EMULATION
  234. bool "Math emulation"
  235. depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
  236. ---help---
  237. Some PowerPC chips designed for embedded applications do not have
  238. a floating-point unit and therefore do not implement the
  239. floating-point instructions in the PowerPC instruction set. If you
  240. say Y here, the kernel will include code to emulate a floating-point
  241. unit, which will allow programs that use floating-point
  242. instructions to run.
  243. config 8XX_MINIMAL_FPEMU
  244. bool "Minimal math emulation for 8xx"
  245. depends on 8xx && !MATH_EMULATION
  246. help
  247. Older arch/ppc kernels still emulated a few floating point
  248. instructions such as load and store, even when full math
  249. emulation is disabled. Say "Y" here if you want to preserve
  250. this behavior.
  251. It is recommended that you build a soft-float userspace instead.
  252. config IOMMU_HELPER
  253. def_bool PPC64
  254. config SWIOTLB
  255. bool "SWIOTLB support"
  256. default n
  257. select IOMMU_HELPER
  258. ---help---
  259. Support for IO bounce buffering for systems without an IOMMU.
  260. This allows us to DMA to the full physical address space on
  261. platforms where the size of a physical address is larger
  262. than the bus address. Not all platforms support this.
  263. config HOTPLUG_CPU
  264. bool "Support for enabling/disabling CPUs"
  265. depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV)
  266. ---help---
  267. Say Y here to be able to disable and re-enable individual
  268. CPUs at runtime on SMP machines.
  269. Say N if you are unsure.
  270. config ARCH_CPU_PROBE_RELEASE
  271. def_bool y
  272. depends on HOTPLUG_CPU
  273. config ARCH_ENABLE_MEMORY_HOTPLUG
  274. def_bool y
  275. config ARCH_HAS_WALK_MEMORY
  276. def_bool y
  277. config ARCH_ENABLE_MEMORY_HOTREMOVE
  278. def_bool y
  279. config KEXEC
  280. bool "kexec system call (EXPERIMENTAL)"
  281. depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP && !PPC_47x)) && EXPERIMENTAL
  282. help
  283. kexec is a system call that implements the ability to shutdown your
  284. current kernel, and to start another kernel. It is like a reboot
  285. but it is independent of the system firmware. And like a reboot
  286. you can start any kernel with it, not just Linux.
  287. The name comes from the similarity to the exec system call.
  288. It is an ongoing process to be certain the hardware in a machine
  289. is properly shutdown, so do not be surprised if this code does not
  290. initially work for you. It may help to enable device hotplugging
  291. support. As of this writing the exact hardware interface is
  292. strongly in flux, so no good recommendation can be made.
  293. config CRASH_DUMP
  294. bool "Build a kdump crash kernel"
  295. depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP && !PPC_47x)
  296. select RELOCATABLE if PPC64 || 44x
  297. select DYNAMIC_MEMSTART if FSL_BOOKE
  298. help
  299. Build a kernel suitable for use as a kdump capture kernel.
  300. The same kernel binary can be used as production kernel and dump
  301. capture kernel.
  302. config PHYP_DUMP
  303. bool "Hypervisor-assisted dump (EXPERIMENTAL)"
  304. depends on PPC_PSERIES && EXPERIMENTAL
  305. help
  306. Hypervisor-assisted dump is meant to be a kdump replacement
  307. offering robustness and speed not possible without system
  308. hypervisor assistance.
  309. If unsure, say "N"
  310. config FA_DUMP
  311. bool "Firmware-assisted dump"
  312. depends on PPC64 && PPC_RTAS && CRASH_DUMP
  313. help
  314. A robust mechanism to get reliable kernel crash dump with
  315. assistance from firmware. This approach does not use kexec,
  316. instead firmware assists in booting the kdump kernel
  317. while preserving memory contents. Firmware-assisted dump
  318. is meant to be a kdump replacement offering robustness and
  319. speed not possible without system firmware assistance.
  320. If unsure, say "N"
  321. config IRQ_ALL_CPUS
  322. bool "Distribute interrupts on all CPUs by default"
  323. depends on SMP && !MV64360
  324. help
  325. This option gives the kernel permission to distribute IRQs across
  326. multiple CPUs. Saying N here will route all IRQs to the first
  327. CPU. Generally saying Y is safe, although some problems have been
  328. reported with SMP Power Macintoshes with this option enabled.
  329. config NUMA
  330. bool "NUMA support"
  331. depends on PPC64
  332. default y if SMP && PPC_PSERIES
  333. config NODES_SHIFT
  334. int
  335. default "8" if PPC64
  336. default "4"
  337. depends on NEED_MULTIPLE_NODES
  338. config MAX_ACTIVE_REGIONS
  339. int
  340. default "256" if PPC64
  341. default "32"
  342. config ARCH_SELECT_MEMORY_MODEL
  343. def_bool y
  344. depends on PPC64
  345. config ARCH_FLATMEM_ENABLE
  346. def_bool y
  347. depends on (PPC64 && !NUMA) || PPC32
  348. config ARCH_SPARSEMEM_ENABLE
  349. def_bool y
  350. depends on PPC64
  351. select SPARSEMEM_VMEMMAP_ENABLE
  352. config ARCH_SPARSEMEM_DEFAULT
  353. def_bool y
  354. depends on (SMP && PPC_PSERIES) || PPC_PS3
  355. config SYS_SUPPORTS_HUGETLBFS
  356. bool
  357. source "mm/Kconfig"
  358. config ARCH_MEMORY_PROBE
  359. def_bool y
  360. depends on MEMORY_HOTPLUG
  361. # Some NUMA nodes have memory ranges that span
  362. # other nodes. Even though a pfn is valid and
  363. # between a node's start and end pfns, it may not
  364. # reside on that node. See memmap_init_zone()
  365. # for details.
  366. config NODES_SPAN_OTHER_NODES
  367. def_bool y
  368. depends on NEED_MULTIPLE_NODES
  369. config PPC_HAS_HASH_64K
  370. bool
  371. depends on PPC64
  372. default n
  373. config STDBINUTILS
  374. bool "Using standard binutils settings"
  375. depends on 44x
  376. default y
  377. help
  378. Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
  379. Note, that kernel will be able to run only those applications,
  380. which had been compiled using binutils later than 2.17.50.0.3 with
  381. '-zmax-page-size' set to 256K (the default is 64K). Or, if using
  382. the older binutils, you can patch them with a trivial patch, which
  383. changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
  384. choice
  385. prompt "Page size"
  386. default PPC_4K_PAGES
  387. help
  388. Select the kernel logical page size. Increasing the page size
  389. will reduce software overhead at each page boundary, allow
  390. hardware prefetch mechanisms to be more effective, and allow
  391. larger dma transfers increasing IO efficiency and reducing
  392. overhead. However the utilization of memory will increase.
  393. For example, each cached file will using a multiple of the
  394. page size to hold its contents and the difference between the
  395. end of file and the end of page is wasted.
  396. Some dedicated systems, such as software raid serving with
  397. accelerated calculations, have shown significant increases.
  398. If you configure a 64 bit kernel for 64k pages but the
  399. processor does not support them, then the kernel will simulate
  400. them with 4k pages, loading them on demand, but with the
  401. reduced software overhead and larger internal fragmentation.
  402. For the 32 bit kernel, a large page option will not be offered
  403. unless it is supported by the configured processor.
  404. If unsure, choose 4K_PAGES.
  405. config PPC_4K_PAGES
  406. bool "4k page size"
  407. config PPC_16K_PAGES
  408. bool "16k page size" if 44x
  409. config PPC_64K_PAGES
  410. bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
  411. select PPC_HAS_HASH_64K if PPC_STD_MMU_64
  412. config PPC_256K_PAGES
  413. bool "256k page size" if 44x
  414. depends on !STDBINUTILS
  415. help
  416. Make the page size 256k.
  417. As the ELF standard only requires alignment to support page
  418. sizes up to 64k, you will need to compile all of your user
  419. space applications with a non-standard binutils settings
  420. (see the STDBINUTILS description for details).
  421. Say N unless you know what you are doing.
  422. endchoice
  423. config FORCE_MAX_ZONEORDER
  424. int "Maximum zone order"
  425. range 9 64 if PPC64 && PPC_64K_PAGES
  426. default "9" if PPC64 && PPC_64K_PAGES
  427. range 13 64 if PPC64 && !PPC_64K_PAGES
  428. default "13" if PPC64 && !PPC_64K_PAGES
  429. range 9 64 if PPC32 && PPC_16K_PAGES
  430. default "9" if PPC32 && PPC_16K_PAGES
  431. range 7 64 if PPC32 && PPC_64K_PAGES
  432. default "7" if PPC32 && PPC_64K_PAGES
  433. range 5 64 if PPC32 && PPC_256K_PAGES
  434. default "5" if PPC32 && PPC_256K_PAGES
  435. range 11 64
  436. default "11"
  437. help
  438. The kernel memory allocator divides physically contiguous memory
  439. blocks into "zones", where each zone is a power of two number of
  440. pages. This option selects the largest power of two that the kernel
  441. keeps in the memory allocator. If you need to allocate very large
  442. blocks of physically contiguous memory, then you may need to
  443. increase this value.
  444. This config option is actually maximum order plus one. For example,
  445. a value of 11 means that the largest free memory block is 2^10 pages.
  446. The page size is not necessarily 4KB. For example, on 64-bit
  447. systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
  448. this in mind when choosing a value for this option.
  449. config PPC_SUBPAGE_PROT
  450. bool "Support setting protections for 4k subpages"
  451. depends on PPC_STD_MMU_64 && PPC_64K_PAGES
  452. help
  453. This option adds support for a system call to allow user programs
  454. to set access permissions (read/write, readonly, or no access)
  455. on the 4k subpages of each 64k page.
  456. config SCHED_SMT
  457. bool "SMT (Hyperthreading) scheduler support"
  458. depends on PPC64 && SMP
  459. help
  460. SMT scheduler support improves the CPU scheduler's decision making
  461. when dealing with POWER5 cpus at a cost of slightly increased
  462. overhead in some places. If unsure say N here.
  463. config CMDLINE_BOOL
  464. bool "Default bootloader kernel arguments"
  465. config CMDLINE
  466. string "Initial kernel command string"
  467. depends on CMDLINE_BOOL
  468. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  469. help
  470. On some platforms, there is currently no way for the boot loader to
  471. pass arguments to the kernel. For these platforms, you can supply
  472. some command-line options at build time by entering them here. In
  473. most cases you will need to specify the root device here.
  474. config EXTRA_TARGETS
  475. string "Additional default image types"
  476. help
  477. List additional targets to be built by the bootwrapper here (separated
  478. by spaces). This is useful for targets that depend of device tree
  479. files in the .dts directory.
  480. Targets in this list will be build as part of the default build
  481. target, or when the user does a 'make zImage' or a
  482. 'make zImage.initrd'.
  483. If unsure, leave blank
  484. config ARCH_WANTS_FREEZER_CONTROL
  485. def_bool y
  486. depends on ADB_PMU
  487. source kernel/power/Kconfig
  488. config SECCOMP
  489. bool "Enable seccomp to safely compute untrusted bytecode"
  490. depends on PROC_FS
  491. default y
  492. help
  493. This kernel feature is useful for number crunching applications
  494. that may need to compute untrusted bytecode during their
  495. execution. By using pipes or other transports made available to
  496. the process as file descriptors supporting the read/write
  497. syscalls, it's possible to isolate those applications in
  498. their own address space using seccomp. Once seccomp is
  499. enabled via /proc/<pid>/seccomp, it cannot be disabled
  500. and the task is only allowed to execute a few safe syscalls
  501. defined by each seccomp mode.
  502. If unsure, say Y. Only embedded should say N here.
  503. endmenu
  504. config ISA_DMA_API
  505. bool
  506. default !PPC_ISERIES || PCI
  507. menu "Bus options"
  508. config ISA
  509. bool "Support for ISA-bus hardware"
  510. depends on PPC_PREP || PPC_CHRP
  511. select PPC_I8259
  512. help
  513. Find out whether you have ISA slots on your motherboard. ISA is the
  514. name of a bus system, i.e. the way the CPU talks to the other stuff
  515. inside your box. If you have an Apple machine, say N here; if you
  516. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  517. you have an embedded board, consult your board documentation.
  518. config ZONE_DMA
  519. bool
  520. default y
  521. config NEED_DMA_MAP_STATE
  522. def_bool (PPC64 || NOT_COHERENT_CACHE)
  523. config NEED_SG_DMA_LENGTH
  524. def_bool y
  525. config GENERIC_ISA_DMA
  526. bool
  527. depends on ISA_DMA_API
  528. default y
  529. config PPC_INDIRECT_PCI
  530. bool
  531. depends on PCI
  532. default y if 40x || 44x
  533. default n
  534. config EISA
  535. bool
  536. config SBUS
  537. bool
  538. config FSL_SOC
  539. bool
  540. select HAVE_CAN_FLEXCAN if NET && CAN
  541. select PPC_CLOCK if CAN_FLEXCAN
  542. config FSL_PCI
  543. bool
  544. select PPC_INDIRECT_PCI
  545. select PCI_QUIRKS
  546. config FSL_PMC
  547. bool
  548. default y
  549. depends on SUSPEND && (PPC_85xx || PPC_86xx)
  550. help
  551. Freescale MPC85xx/MPC86xx power management controller support
  552. (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
  553. config PPC4xx_CPM
  554. bool
  555. default y
  556. depends on SUSPEND && (44x || 40x)
  557. help
  558. PPC4xx Clock Power Management (CPM) support (suspend/resume).
  559. It also enables support for two different idle states (idle-wait
  560. and idle-doze).
  561. config 4xx_SOC
  562. bool
  563. config FSL_LBC
  564. bool "Freescale Local Bus support"
  565. depends on FSL_SOC
  566. help
  567. Enables reporting of errors from the Freescale local bus
  568. controller. Also contains some common code used by
  569. drivers for specific local bus peripherals.
  570. config FSL_IFC
  571. bool
  572. depends on FSL_SOC
  573. config FSL_GTM
  574. bool
  575. depends on PPC_83xx || QUICC_ENGINE || CPM2
  576. help
  577. Freescale General-purpose Timers support
  578. # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
  579. config MCA
  580. bool
  581. # Platforms that what PCI turned unconditionally just do select PCI
  582. # in their config node. Platforms that want to choose at config
  583. # time should select PPC_PCI_CHOICE
  584. config PPC_PCI_CHOICE
  585. bool
  586. config PCI
  587. bool "PCI support" if PPC_PCI_CHOICE
  588. default y if !40x && !CPM2 && !8xx && !PPC_83xx \
  589. && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
  590. default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
  591. default PCI_QSPAN if !4xx && !CPM2 && 8xx
  592. select ARCH_SUPPORTS_MSI
  593. select GENERIC_PCI_IOMAP
  594. help
  595. Find out whether your system includes a PCI bus. PCI is the name of
  596. a bus system, i.e. the way the CPU talks to the other stuff inside
  597. your box. If you say Y here, the kernel will include drivers and
  598. infrastructure code to support PCI bus devices.
  599. config PCI_DOMAINS
  600. def_bool PCI
  601. config PCI_SYSCALL
  602. def_bool PCI
  603. config PCI_QSPAN
  604. bool "QSpan PCI"
  605. depends on !4xx && !CPM2 && 8xx
  606. select PPC_I8259
  607. help
  608. Say Y here if you have a system based on a Motorola 8xx-series
  609. embedded processor with a QSPAN PCI interface, otherwise say N.
  610. config PCI_8260
  611. bool
  612. depends on PCI && 8260
  613. select PPC_INDIRECT_PCI
  614. default y
  615. config 8260_PCI9
  616. bool "Enable workaround for MPC826x erratum PCI 9"
  617. depends on PCI_8260 && !8272
  618. default y
  619. source "drivers/pci/pcie/Kconfig"
  620. source "drivers/pci/Kconfig"
  621. source "drivers/pcmcia/Kconfig"
  622. source "drivers/pci/hotplug/Kconfig"
  623. config HAS_RAPIDIO
  624. bool
  625. default n
  626. config RAPIDIO
  627. bool "RapidIO support"
  628. depends on HAS_RAPIDIO || PCI
  629. help
  630. If you say Y here, the kernel will include drivers and
  631. infrastructure code to support RapidIO interconnect devices.
  632. config FSL_RIO
  633. bool "Freescale Embedded SRIO Controller support"
  634. depends on RAPIDIO && HAS_RAPIDIO
  635. default "n"
  636. ---help---
  637. Include support for RapidIO controller on Freescale embedded
  638. processors (MPC8548, MPC8641, etc).
  639. source "drivers/rapidio/Kconfig"
  640. endmenu
  641. config NONSTATIC_KERNEL
  642. bool
  643. default n
  644. menu "Advanced setup"
  645. depends on PPC32
  646. config ADVANCED_OPTIONS
  647. bool "Prompt for advanced kernel configuration options"
  648. help
  649. This option will enable prompting for a variety of advanced kernel
  650. configuration options. These options can cause the kernel to not
  651. work if they are set incorrectly, but can be used to optimize certain
  652. aspects of kernel memory management.
  653. Unless you know what you are doing, say N here.
  654. comment "Default settings for advanced configuration options are used"
  655. depends on !ADVANCED_OPTIONS
  656. config LOWMEM_SIZE_BOOL
  657. bool "Set maximum low memory"
  658. depends on ADVANCED_OPTIONS
  659. help
  660. This option allows you to set the maximum amount of memory which
  661. will be used as "low memory", that is, memory which the kernel can
  662. access directly, without having to set up a kernel virtual mapping.
  663. This can be useful in optimizing the layout of kernel virtual
  664. memory.
  665. Say N here unless you know what you are doing.
  666. config LOWMEM_SIZE
  667. hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
  668. default "0x30000000"
  669. config LOWMEM_CAM_NUM_BOOL
  670. bool "Set number of CAMs to use to map low memory"
  671. depends on ADVANCED_OPTIONS && FSL_BOOKE
  672. help
  673. This option allows you to set the maximum number of CAM slots that
  674. will be used to map low memory. There are a limited number of slots
  675. available and even more limited number that will fit in the L1 MMU.
  676. However, using more entries will allow mapping more low memory. This
  677. can be useful in optimizing the layout of kernel virtual memory.
  678. Say N here unless you know what you are doing.
  679. config LOWMEM_CAM_NUM
  680. depends on FSL_BOOKE
  681. int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
  682. default 3
  683. config DYNAMIC_MEMSTART
  684. bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
  685. depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
  686. select NONSTATIC_KERNEL
  687. help
  688. This option enables the kernel to be loaded at any page aligned
  689. physical address. The kernel creates a mapping from KERNELBASE to
  690. the address where the kernel is loaded. The page size here implies
  691. the TLB page size of the mapping for kernel on the particular platform.
  692. Please refer to the init code for finding the TLB page size.
  693. DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
  694. kernel image, where the only restriction is the page aligned kernel
  695. load address. When this option is enabled, the compile time physical
  696. address CONFIG_PHYSICAL_START is ignored.
  697. This option is overridden by CONFIG_RELOCATABLE
  698. config RELOCATABLE
  699. bool "Build a relocatable kernel (EXPERIMENTAL)"
  700. depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
  701. select NONSTATIC_KERNEL
  702. help
  703. This builds a kernel image that is capable of running at the
  704. location the kernel is loaded at, without any alignment restrictions.
  705. This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
  706. One use is for the kexec on panic case where the recovery kernel
  707. must live at a different physical address than the primary
  708. kernel.
  709. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
  710. it has been loaded at and the compile time physical addresses
  711. CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
  712. setting can still be useful to bootwrappers that need to know the
  713. load address of the kernel (eg. u-boot/mkimage).
  714. config RELOCATABLE_PPC32
  715. def_bool y
  716. depends on PPC32 && RELOCATABLE
  717. config PAGE_OFFSET_BOOL
  718. bool "Set custom page offset address"
  719. depends on ADVANCED_OPTIONS
  720. help
  721. This option allows you to set the kernel virtual address at which
  722. the kernel will map low memory. This can be useful in optimizing
  723. the virtual memory layout of the system.
  724. Say N here unless you know what you are doing.
  725. config PAGE_OFFSET
  726. hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
  727. default "0xc0000000"
  728. config KERNEL_START_BOOL
  729. bool "Set custom kernel base address"
  730. depends on ADVANCED_OPTIONS
  731. help
  732. This option allows you to set the kernel virtual address at which
  733. the kernel will be loaded. Normally this should match PAGE_OFFSET
  734. however there are times (like kdump) that one might not want them
  735. to be the same.
  736. Say N here unless you know what you are doing.
  737. config KERNEL_START
  738. hex "Virtual address of kernel base" if KERNEL_START_BOOL
  739. default PAGE_OFFSET if PAGE_OFFSET_BOOL
  740. default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
  741. default "0xc0000000"
  742. config PHYSICAL_START_BOOL
  743. bool "Set physical address where the kernel is loaded"
  744. depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
  745. help
  746. This gives the physical address where the kernel is loaded.
  747. Say N here unless you know what you are doing.
  748. config PHYSICAL_START
  749. hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
  750. default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
  751. default "0x00000000"
  752. config PHYSICAL_ALIGN
  753. hex
  754. default "0x04000000" if FSL_BOOKE
  755. help
  756. This value puts the alignment restrictions on physical address
  757. where kernel is loaded and run from. Kernel is compiled for an
  758. address which meets above alignment restriction.
  759. config TASK_SIZE_BOOL
  760. bool "Set custom user task size"
  761. depends on ADVANCED_OPTIONS
  762. help
  763. This option allows you to set the amount of virtual address space
  764. allocated to user tasks. This can be useful in optimizing the
  765. virtual memory layout of the system.
  766. Say N here unless you know what you are doing.
  767. config TASK_SIZE
  768. hex "Size of user task space" if TASK_SIZE_BOOL
  769. default "0x80000000" if PPC_PREP || PPC_8xx
  770. default "0xc0000000"
  771. config CONSISTENT_SIZE_BOOL
  772. bool "Set custom consistent memory pool size"
  773. depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
  774. help
  775. This option allows you to set the size of the
  776. consistent memory pool. This pool of virtual memory
  777. is used to make consistent memory allocations.
  778. config CONSISTENT_SIZE
  779. hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
  780. default "0x00200000" if NOT_COHERENT_CACHE
  781. config PIN_TLB
  782. bool "Pinned Kernel TLBs (860 ONLY)"
  783. depends on ADVANCED_OPTIONS && 8xx
  784. endmenu
  785. if PPC64
  786. config RELOCATABLE
  787. bool "Build a relocatable kernel"
  788. select NONSTATIC_KERNEL
  789. help
  790. This builds a kernel image that is capable of running anywhere
  791. in the RMA (real memory area) at any 16k-aligned base address.
  792. The kernel is linked as a position-independent executable (PIE)
  793. and contains dynamic relocations which are processed early
  794. in the bootup process.
  795. One use is for the kexec on panic case where the recovery kernel
  796. must live at a different physical address than the primary
  797. kernel.
  798. config PAGE_OFFSET
  799. hex
  800. default "0xc000000000000000"
  801. config KERNEL_START
  802. hex
  803. default "0xc000000000000000"
  804. config PHYSICAL_START
  805. hex
  806. default "0x00000000"
  807. endif
  808. source "net/Kconfig"
  809. source "drivers/Kconfig"
  810. source "fs/Kconfig"
  811. source "arch/powerpc/sysdev/qe_lib/Kconfig"
  812. source "lib/Kconfig"
  813. source "arch/powerpc/Kconfig.debug"
  814. source "security/Kconfig"
  815. config KEYS_COMPAT
  816. bool
  817. depends on COMPAT && KEYS
  818. default y
  819. source "crypto/Kconfig"
  820. config PPC_CLOCK
  821. bool
  822. default n
  823. select HAVE_CLK
  824. config PPC_LIB_RHEAP
  825. bool
  826. source "arch/powerpc/kvm/Kconfig"